---
title: "Vertex Discovery Proxy Route"
method: PATCH
path: "/vertex_ai/discovery/{endpoint}"
tags: ["Vertex AI Pass-through", "pass-through"]
---

# Vertex Discovery Proxy Route

`PATCH /vertex_ai/discovery/{endpoint}`

Call any vertex discovery endpoint using the proxy.

Just use `{PROXY_BASE_URL}/vertex_ai/discovery/{endpoint:path}`

Target url: `https://discoveryengine.googleapis.com`

## Path parameters

- `endpoint` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-04** `705372eb984c` — 1 info
  - api operation id `vertex_discovery_proxy_route_vertex_ai_discovery__endpoint__get` removed and replaced with `vertex_discovery_proxy_route_vertex_ai_discovery__endpoint__put`
- **2026-09-03** `add3be20be03` — 1 info
  - api operation id `vertex_discovery_proxy_route_vertex_ai_discovery__endpoint__patch` removed and replaced with `vertex_discovery_proxy_route_vertex_ai_discovery__endpoint__get`

[Change history](https://skmtc.dev/koboillm/apis/litellm-api/changes/vertex_ai/discovery/:endpoint/patch.md)

---

[API](https://skmtc.dev/koboillm/apis/litellm-api.md) · [All operations](https://skmtc.dev/koboillm/apis/litellm-api/llms.txt) · [OpenAPI document](https://skmtc.dev/koboillm/apis/litellm-api/revisions/705372eb984c?raw)